水稻秸秆阴离子吸附剂的制备与其性能分析

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1、———————————型丝塑篁坠—————一——饰后水稻秸秆的解吸率即可达到90％以上。通过吸附～解吸循环10次的试验表明，水稻秸秆的吸附容量没有发生明显的变化，表明修饰水稻秸秆在富营养化水体处理方面，具有较高的实用价值。关键词：水稻秸秆；乙二胺；吸附；磷酸根llI鬻簿雾鬟菌泌壤溱薹窨，葛P雾荽嚣黼繁㈣耥翳挂蠡薯’藕}瓣醚垂鎏锺池粼漂震雾好≯嚣善j鬻翳黼黝灌糍冀黼鬻羹囊馨燃鬻震麟鬣澎勘驾贬础∽姆嘲摄嚣蓬Ⅳ监器。拳麓鬟》骖劈姓翁荩黪蠹成鼯薅翥～嚣萨蟾籍磐鬻鬻露灞潮淄黼蚕溺瀚躺』__掣，}^；i％i亳≯￡^。，*鼻．．邛璀融鬣澎．。嚣麓擎露孥捧溅凌鞲瓣鬻

2、麟就冀《l*№羧戛营囊目攀辫卅攀聍一嚣豁污∞瓣繁鼙一嗣群弱鬟键溺翥簸鎏蠢鍪m娶m群AbstractRicestraws(RS)areregardedasabundantandavailablebiologicalresources．Butmostofthemareabandonedorcombustedwithoutproperutilizationleadingtoenvironmentalpollutionandsafetyincidents．Theproblemofeutrophicationisoneoftheseriouswaterpoll

3、utionproblems．Itmainlybecauseofexcessivenutrientsinwatercontainingnitrogenandphosphorusavailableforalgae，inwhichphosphorusisthelimitingfactorofthealgaeproliferationiscausedbywatereutrophic·ationkeynutrients．Inthispaper，theoriginalmethodbasedonricestrawanionicsorbentsynthesizeda

4、ndappliedtowater，phosphateadsorptionstudies．Modifiedricestraw(MRS)waspreparedfromriceresidueafterreactionwithepichlorohydrinandtriethylamineinthepresenceofN，N—dimethylformamideandethylenediamine．AnoptimalsynthesisconditionofMRSWasdeterminedafterthesingleinfluentialfactorexperim

5、ents．Dataofphosphateremovalandyieldwereusedasperformanceindicatorsoftheproductsprepared．ThephysicalandchemicalcharacteristicsofRSandMRS’wereexaminedbylotsofinstruments，suchasscanningelectronicmicroscope，elementalanalysisinstrument，infraredspectroscopyinstrumentandavarietyofchem

6、icalmethods，andwerecomparedwiththeoriginalricestraw．Theresultsindicatedthatthedosagesofreactants，experimentaltimeandexperimentaltemperaturesallinfluencedthepreparationofMRS，SOtheconditionsshouldbestrictlycontrolledinthemodificationprocess．Thebestadsorptionconditions：pH4to1O；ads

7、orbentdosageof59／L；temperatureontheadsorptioneffectisnotsignificantlyaffected，SOtheactualapplicationisnotsubjecttothelimitationsofseasonaltemperature．Therateofphosphorusremovalwasmorethan90％．ThephysicalandchemicalcharacteristicsofMRShadsignificantdiffei‘encewiththoseofRS．Thesur

8、faceofMRSwereasclearerandsmootherincomparisonwithRS，an